Most of the symptoms of intestinal infection are paroxysmal or persistent abdominal cramps with or without severe diarrhea, bloating and anal discharge, and some patients may have varying degrees of fever. If the above-mentioned situation occurs, it is most likely to consider improper diet, caused by eating unclean food, spicy and stimulating food, or food that has deteriorated overnight, which causes food fermentation in the intestine and stimulates infection. It is also possible that the gastrointestinal tract is not functioning well, and the excessive intake of poorly digested food cannot be digested, which causes the above symptoms due to prolonged storage and infection. Once the symptoms of intestinal infection appear, if the presence of infection is clear, timely anti-infection treatment to prevent severe diarrhea caused by dehydration or infectious shock, if necessary, to the hospital for further examination of stool routine, stool bacterial culture, clear cause and then targeted treatment. It is important to develop good living habits and pay attention to dietary hygiene in order to effectively prevent infections.